In the heimlich maneuver where do you place your fist?

The fist is placed onto the navel with the other hand over it then both are pulled in and upward to force the abdominal organs up onto the diaphragm and in turn squash the lungs to get an air rush up the trachea. It is now called the 'Abdominal Thrust'.

2nd Answer:

Many first aid texts recommend placing your closed fist a width of 2 fingers below the sharp lower point of the breast bone . . .